NCLEX-RN
NCLEX RN Predictor Exam
1. In the Gram Stain procedure, which component acts as the mordant?
- A. Crystal violet
- B. Methyl alcohol
- C. Iodine
- D. Safranin
Correct answer: C
Rationale: In the Gram Stain procedure, the mordant is Gram's Iodine. The purpose of the mordant is to form a complex with the crystal violet, enhancing its ability to bind to the cell wall. Crystal violet is actually the primary stain used in the Gram Stain procedure to initially color all cells. Methyl alcohol is the decolorizer that removes the crystal violet from certain cell types. Safranin is the counterstain used to stain those cells that did not retain the crystal violet stain after the decolorization step.
2. What is the most effective step in hand washing?
- A. Using friction to remove potential pathogens.
- B. Using hospital-grade soap.
- C. Moisturizing the hands after washing to prevent cracking.
- D. Washing hands with soap for at least 15 seconds.
Correct answer: A
Rationale: The most effective step in hand washing is using friction to remove potential pathogens. While using soap, moisturizing hands, and washing for a sufficient duration are important aspects of hand hygiene, the mechanical action of rubbing hands together with friction is crucial in dislodging and removing dirt, debris, and potential pathogens. Hospital-grade soap may be beneficial, but the physical act of friction is key to effective hand washing. Moisturizing after washing is important for skin health but not the most effective step in the hand washing process. Simply washing hands for a specific duration, such as 15 seconds, without proper friction may not effectively remove contaminants. Therefore, using friction for thorough cleaning is the most crucial step in hand washing.
3. The healthcare professional has collected the following information on a patient: palpated blood pressure"?180 mm Hg; auscultated blood pressure"?170/100 mm Hg; apical pulse"?60 beats per minute; radial pulse"?70 beats per minute. What is the patient's pulse pressure?
- A. 10
- B. 70
- C. 80
- D. 100
Correct answer: B
Rationale: Pulse pressure is the numerical difference between the systolic and diastolic blood pressure readings. In this case, the systolic blood pressure is 170 mm Hg, and the diastolic blood pressure is 100 mm Hg. Therefore, the pulse pressure is calculated as 170 - 100 = 70 mm Hg. Pulse pressure reflects the stroke volume, the amount of blood ejected from the heart with each beat. Choices A, C, and D are incorrect because they do not accurately represent the difference between the systolic and diastolic blood pressure readings provided.
4. When preparing a patient on complete bed rest to eat, at what degree angle or more should you put the head of the bed up?
- A. 10
- B. 15
- C. 20
- D. 30
Correct answer: D
Rationale: The correct answer is D: 30. When a patient is on complete bed rest, it is essential to elevate the head of the bed at a 30-degree angle or more before meals. This position helps prevent choking and aspiration of food during eating by promoting proper swallowing and digestion. Choices A, B, and C are incorrect because they do not provide the optimal elevation needed to support safe and effective feeding for a patient on complete bed rest.
5. The hospital has sounded the call for a disaster drill on the evening shift. Which of these clients would the nurse prioritize first on the list to be discharged in order to make a room available for a new admission?
- A. A middle-aged client with a history of being ventilator dependent for over seven (7) years and admitted with bacterial pneumonia five days ago.
- B. A young adult with diabetes mellitus Type 2 for over ten (10) years and admitted with antibiotic-induced diarrhea 24 hours ago.
- C. An elderly client with a history of hypertension, hypercholesterolemia, and lupus, and was admitted with Stevens-Johnson syndrome that morning.
- D. An adolescent with a positive HIV test and admitted for acute cellulitis of the lower leg 48 hours ago.
Correct answer: A
Rationale: The best candidate for discharge during a need for emergency room availability is a stable patient with a chronic condition who is familiar with their care. In this scenario, the middle-aged client in option A, who has been ventilator dependent for over seven years and admitted with bacterial pneumonia five days ago, is most suitable for discharge. This client is likely stable and can continue medication therapy at home, making them the most appropriate choice for discharge at this time. Choice B should not be the priority for discharge as the young adult with diabetes mellitus Type 2 admitted with antibiotic-induced diarrhea 24 hours ago may need further monitoring and management of their condition. Choice C, the elderly client with multiple comorbidities and admitted with Stevens-Johnson syndrome on the same day, is not a suitable candidate for immediate discharge as they may require ongoing medical attention and observation. Choice D, the adolescent with a positive HIV test and admitted for acute cellulitis of the lower leg 48 hours ago, should not be discharged first as acute cellulitis may require continued treatment and monitoring, especially in the context of a positive HIV status.
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